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M series

Product catalog summary

General Specifications of M Series Gearboxes
The M series gearboxes by Brevini Power Transmission S.p.A. feature a monoblock design that enhances rigidity, reduces oil leakage, minimizes noise, and strengthens gears. The single-piece housing supports all bearings, ensuring high precision and tight axis tolerance. Made from GG20-22 material, the housing supports high radial loads and ensures long bearing and gear life. Professional software is used for calculating bearings, gears, and shafts, adhering to current standards. The middle bearing support plate minimizes wear and deformation, resulting in low-noise operation.

Design Principles
Brevini's design principles include high technology, reliability, high power density, high efficiency, compatible mounting, and flexible solutions. The gearboxes are easy to install and customizable for direct, IEC B5, or B14 motor connections. They are available in foot or flange-mounted versions with two or three stages in a single housing. The modular design allows coupling of two gearboxes with minimal changes.

Important Considerations
- Drawings are illustrative and not binding.
- Brevini reserves the right to make changes to products and catalogs without notice.
- Follow operational instructions before commissioning.
- Oil quantities are indicative; verify with oil level plugs according to mounting positions. The correct oil viscosity is indicated on the gearbox nameplate.
- If the mounting position is not specified in the order, M series gearboxes are delivered in mounting position M1, and N series in M4. Using a different mounting position voids the warranty.
- Weights are average values and may vary based on accessories and ratios.

Technical Explanations
Key parameters include output torque (M2), nominal torque (Ma), nominal power (Pe), and transmission ratio (i). The document explains how these values are calculated and their significance in gearbox operation. It also covers equivalent power and torque for variable conditions, required power and torque for applications, permissible axial and radial loads, and the service factor (fs) for safety.

Technical Specifications
The noise level of gearboxes complies with VDI guidelines 2159. Gearboxes are painted with RAL 7031, with options for different colors and corrosion protection for harsh environments.

Lubrication and Accessories
Gearboxes are filled with specific oils as per lubrication tables. Available accessories include motor connection flanges, output flanges, backstops, special sealing solutions, transparent oil level indicators, and electromagnetic brakes.

Designation and Configuration
The document provides a detailed breakdown of gearbox designations, including motor size, brake type, number of poles, and housing size. It explains the different configurations available for monoblock type helical geared motors, including foot and flange mounted options.

Gearbox Series N Overview
This document provides detailed specifications and classifications for the N series gearboxes, including various configurations and motor types. It outlines the naming conventions and technical specifications for different gearbox models, such as MR172, MT373, and NRB473, among others.

Specifications
The document lists the components and configurations of gearboxes, including motor connection types, gear unit sizes, revision numbers, stage numbers, efficiency classes, motor types and sizes, number of poles, and brake types.

Technical Data
Tables provide detailed data on motor sizes and stages, showing the range of ratios available for each gearbox model. The data is organized by motor size and includes possible combinations of ratios.

Service Factor
The service factor (fs) is a safety coefficient that accounts for different operating conditions. It is determined by operating time, nature of load, start-up frequency, and driver type. The document provides guidelines for selecting the appropriate service factor based on these criteria.

Load Classification
Different types of loads are classified for various industries, such as cranes, pumps, stone and clay working machines, textile machines, oil industry, food industry, laundries, and metal rolling mills. Each category is further divided into uniform, moderate, and heavy shock loads.

Conclusion
This document serves as a comprehensive guide for selecting and understanding the specifications of N series gearboxes, ensuring optimal performance and safety in various industrial applications.

Overview
The document provides technical specifications and guidelines for various industrial machines and components, focusing on load calculations, rotation directions, and equivalent power ratings. It includes sections on metal rolling mills, building machines, paper machines, rubber machinery, chemical industry equipment, and conveyors.

Machine Categories
Includes metal rolling mills, building machines, paper machines, rubber machinery, chemical industry, and conveyors, detailing specific equipment and their operational requirements.

Load Specifications
Defines uniform, moderate, and heavy shock loads with specific criteria for each.

Rotation Directions
Details the clockwise (CW) and counterclockwise (CCW) rotation directions for M Series gearboxes, applicable even with backstop devices.

Radial Load Calculations
Permissible radial loads are calculated based on working life and safety factors, with adjustments for shock loading and non-central load applications.

Equivalent Power Rating
Explains the calculation of equivalent power for gearboxes operating at constant speed but variable torques, allowing for standard gearbox selection methods.

Introduction
This document provides detailed specifications and guidelines for various types of oils and greases used in industrial applications, including mineral, synthetic, food-grade, and biodegradable oils. It also covers the specifications for AC motors, particularly three-phase squirrel cage motors.

Oil Specifications
Lists various mineral, synthetic, food-grade, and biodegradable oils with their respective temperature ranges and product names, categorized by viscosity grades.

Grease Specifications
Details operating temperature ranges and product names for mineral and synthetic greases.

Gearbox Oil Quantities
Provides detailed tables for oil quantities required for M and N series gearboxes, categorized by the number of stages and mounting positions.

AC Motors
Describes the characteristics of three-phase squirrel cage motors, highlighting their maintenance-free construction, reliability, and cost-effectiveness.

Conclusion
This document serves as a comprehensive guide for selecting and using various oils and greases in industrial applications, as well as understanding the specifications and operation of AC motors.

General Characteristics of AC Motors
The squirrel cage three-phase motor is widely used due to its simple construction, low maintenance, reliability, and cost-effectiveness. Its operation is characterized by a torque-speed curve, which stabilizes at the intersection with the load torque line.

Modes of Operation
Motors are designed for continuous operation (S1), but other modes include short-time duty (S2), periodic duty without temperature influence (S3), and others up to S8.

Protection and Insulation Classes
Standard motors have an IP54 protection class and F insulation class, with options for higher protection and insulation upon request.

Efficiency Classes
The efficiency of low voltage three-phase asynchronous motors is measured according to IEC 60034-2-1:2007.

AC Frequency Inverters
Inverters convert DC to AC using a rectifier and inverter bridge, with a DC link in between.

DC Motors
DC drive systems have expanded applications with advancements in electronic components.

Overview of DC Motors and Electromagnetic Brakes

Introduction to DC Motors
DC motors have become more economically feasible due to advancements in miniaturized power converter technology.

Operating Principles of DC Motors
DC motors require a converter with DC output and consist of windings such as armature, field, commutation, and compensation windings.

Types of DC Motors
DC motors can be categorized based on the wiring of the exciting or field winding.

Speed Control of DC Motors
The speed of DC motors is adjusted by altering the DC voltage.

Electromagnetic Brakes
Electromagnetic brakes have two friction surfaces and are released electromagnetically.

Brake Types and Working Voltages
Brakes can be ordered with different supply voltages, and the coil voltage is adjusted using rectifiers.

Shock Voltage Supply Transformer
These transformers help overcome spring pressure delays in high power brakes.

Brake Connection Types
Includes delayed and immediate/fast connection types for different braking requirements.

Transformers with Shock Voltage
Used with large brakes requiring high torque.

Brake Selection
To select the correct brake, data such as total inertia, maximum motor speed, and required static torque are necessary.

Thermal Capacity of Brakes
After calculating the necessary braking torque, the thermal capacity must be checked.

Adjustment of Air-Gap
To maintain consistent brake performance, the air-gap must be re-adjusted after a certain period of operation.

Example of Brake Selection
Given specific parameters, a brake with a torque of 150 Nm is selected.

Geared Motors Performance Tables
Includes data on power, output speeds, output torque, permissible radial loads, service factors, and motor efficiency classes.

Overview
This document provides detailed dimensional specifications for various motor sizes, focusing on terminal boxes and optional flange dimensions.

Key Sections
Includes motor sizes and dimensions, dimensional tables, optional flange dimensions, and specifications for tapped center holes.

Critical Information
Includes brake motor dimensions, thread specifications, and dimensional tolerances.

Conclusion
This document serves as a comprehensive guide for engineers and manufacturers, providing essential dimensions and specifications for motor assembly and customization.

Catalog excerpts

^ brewini power transmission Ilf SERIES New Edition 2016 • brevini gearmotors BREVINI GEARMOTORS . Foot and Flange Mounted Inline Helical Gearboxes

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Indice Index Inhaltsverzeichnis Info generali General Info. Einfuhrung Motori Motors Motor Significato dei simboli Gamma di produzione Caratteristiche generali dei riduttori serie M Spiegazioni tecniche Caratteristiche tecniche Accessori Designazione unita Esempi di designazione Comb. di rapporti geometrica-mente possibili, in funzione della grandezza del motore Fattore di servizio Classificazione dei carichi Senso di rotazione Carichi radiali Calc. dei carichi radiali Calc. della potenza equivalente Esempio di calcolo della po-tenza equivalente Scelta del riduttore Modulo di scelta del riduttore Lubrificazione Vaso...

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Freni Brakes Bremsen Tabelle prestazi-onali Perform, Tables Leistung-Drehzahl Tabellen. Tabelle dimensi-onali Dimension Pages Abmesungs Tabellen Motori Motors Motor Indice index Inhaltsverzeichnis f- Convertitori di frequenza in CA Motori CC a- Caratt. generali dei motori CC b- Principi di funzionamento dei motori CC c- Tipi di motori CC d- Controllo della velocita di rotazione dei motori CC Freni elettromagnetici Tipi di freni Tipi di connessione Scelta dei freni Capacita termica dei freni Tabelle prestazionali dei motoriduttori Tabelle prestazionali dei ridut tori Serie MR, NR Serie MN, NN Serie...

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Informazioni generali General information EinfuhrungSignificato dei simbolict :Coefficiente tempo di attivazione. Key of Symbols c '.Coefficient of switch on time. ama sugli alberi in uscita [kN] F : Carichi assiali ammessi ame sugli alberi in entrata [kN] F : Carichi radiali ammessi qam sugli alberi in uscita [N] F : Carichi radiali ammessi qem sugli alberi in entrata [N] : Permissible axial loads which can be applied to output shafts [kN] : Permissible axial loads which can be applied to input shafts [kN] Permissible radial loads which can be applied to output shafts [N] Permissible...

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Informazioni generali General Information Einführung Note / Notes / Notizen

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Informazioni generali General Information Einführung Note / Notes / Notizen

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Informazioni generali General Information Einführung Caratteristiche generali dei riduttori serie M General Specifications of M Series Gearboxes Allgemeine Eigenschaften von M Serie Getrieben Brevini Power Transmission S.p.A. nel progettare i riduttori della serie M ha optato per la struttura monoblocco, che offre una serie di vantaggi in termini di rigidità, tenuta, livello di rumorosità e resistenza degli ingranaggi. Tutti i cuscinetti sono supportati dal corpo monoblocco e non da piastre di copertura o altri componenti. Lavorare gli assi con un singolo ciclo operativo garantisce alta precisione...

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Informazioni generali General Information Einführung Spiegazioni tecniche Technical Explanations Technische Erläuterungen - Coppia trasmessa (M2): [Nm] Moltiplicando la coppia in uscita dal motore per il rapporto di trasmissione e il rendimento si ottiene la coppia trasmessa a livello dell'albero in uscita dal riduttore. - Output Torque (M2): [Nm] Multiplication of motor output torque by transmission ratio and efficiency gives the output torque result at the output shaft of the gear unit. - Ausgangsmoment (M2): [Nm] Multiplikation von Ausgangsmoment des Motors mit Übersetzung und Division das...

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Informazioni generali General information Einfuhrung - Lubrificazione: I riduttori della serie M e N utilizzano i tipi di olio riportati nelle tabelle di lubrificazione. Per maggiori informazioni sulla lubrificazione, fare riferimento alla sezione dedicata. - Accessori: I riduttori della serie M e N possono essere corredati dei seguenti accessori. - Flangia di connessione motore IEC B5/B14 - Flange di uscita - Dispositivi antiritorno - Guarnizioni speciali di tenuta - Indicatore livello olio trasparente - Freni elettromagnetici. Per altri accessori, si prega contattare Brevini Power Transmission...

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Informazioni generali General Information Einführung

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Informazioni generali General information EinfuhrungDesignazione / Unit Designation / Typenbezeichnungen M R 4 7 3 - 3 E90S / 4C - L02 L Freno / Brake / Bremse L-220V Con ventola / With Fan / Mit Lufter P-24V Con ventola / With Fan / Mit Lufter S-220 V Senza ventola / Without Fan / Ohne Lufter Z-24 V Senza ventola / Without Fan / Ohne Lufter 01-10 Nm 10-100 Nm Numero di poli / Number of poles / Anzahl der Polen Grandezza motore / Motor Size / MotorbaugroBe Per le versioni MR / NR e MV / NV For MR / NR and MV/ NV Types Fur die Typen MR / NR und MV / NV Numero di poli / Pole Number / Anzahl...

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Informazioni generali General Information Einführung Designazione / Unit Designation / Typenbezeichnungen MR... Motoriduttori elicoidali monoblocco, montati su piedini / Monoblock type helical geared motors, foot mounted / Stirnradgetriebemotoren mit Blockgehäuse, Ausführung mit Fuss Motoriduttori elicoidali monoblocco, montati con flangia / Monoblock type helical geared motors, flange mounted / Stirnradgetriebemotoren mit Blockgehäuse, Ausführung mit Flansch Motoriduttori elicoidali monoblocco con flangia di connessione motore IEC B5/B14, montati su piedini / Monoblock type helical geared units...

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Informazioni generali General Information Einführung Designazione / Unit Designation / Typenbezeichnungen

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90S : Grandezza corpo motore R : With motor connection 1 : Gear unit size 90S : Motor frame size M : M Serie Getriebe T : Solid input shaft 3 : Gear unit size T : Albero pieno all'entrata T : Vollwelleneingang ohne Motor N : Flangia IEC B5 senza motore all'entrata A11 : Motore tipo 112, flangia B5 N ; IEC B5 flange without motor input 4 : Gear unit size. A11 : Motor type 112, B5 flange N : IEC B5 Flansch ohne Motor 3 : Classe di efficienza del motore N : N series gearbox 4 : Gear unit size N : N Serie Getriebe

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